Bees are flying insects that feed on nectar made in flowers - AQA - A-Level Biology - Question 3 - 2018 - Paper 1
Question 3
Bees are flying insects that feed on nectar made in flowers. There are many different species of bee.
Scientists investigated how biodiversity of bees varied in thr... show full transcript
Worked Solution & Example Answer:Bees are flying insects that feed on nectar made in flowers - AQA - A-Level Biology - Question 3 - 2018 - Paper 1
Step 1
What is meant by 'species richness'?
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Answer
Species richness refers to a measure of the number of different species present in a community, habitat, or ecosystem.
Step 2
From the data in Figure 4, a student made the following conclusions.
1. The natural habitat is most favourable for bees.
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The data support this statement as the mean number of bees is highest in the natural habitat, peaking before day 200.
Step 3
2. The town is the least favourable for bees.
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The data also support this conclusion as the mean number of bees is lowest in the town habitat, particularly after day 125.
Step 4
The data in Figure 4 support these conclusions? Explain your answer.
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Yes, the natural habitat shows the highest biodiversity with the most significant peaks in bee numbers compared to town and farmland, especially before day 200. Conversely, the town shows the lowest mean bee numbers throughout the data collection period.
Step 5
1. ...
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The method must not harm the bees and ensure that they can be released unharmed.
Step 6
2. ...
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The method must allow for close examination and utilize a key to identify the species.
Step 7
Suggest and explain two ways in which the scientists could have improved the method used for data collection in this investigation.
1. ...
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They could collect data at more times of the year to cover a broader range of periods for bee activity.
Step 8
2. ...
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They could increase the number of individuals sampled in each species for more accurate calculations of biodiversity.
Step 9
What do these names suggest about the evolutionary relationships between these bee species? Explain your answer.
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The names indicate that A. chlorogaster and A. piperi are closely related to each other but different from P. pruinosa, suggesting a shared ancestor and varying evolutionary paths.
